Amazon.com: Neurogan GHK Cu (Copper Peptide) Neck & Face Serum 1,200mcg (1 oz bottle) : Beauty & Personal Care Medically Guided Hair Treatment Rumen Australia Buy GHK Cu Exceptional 99%+ Purity Third Party COA Included So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth. USA Copper Peptide GHK Cu Powder, DIY Blue Copper for Making the Best Face Cream eBay